diff --git a/sumo_project/config.py b/sumo_project/config.py
index c2061f4..6fcbc5d 100644
--- a/sumo_project/config.py
+++ b/sumo_project/config.py
@@ -17,10 +17,13 @@ CELLS_NUMBER = 10
 EMISSIONS_THRESHOLD = 500000
 n_steps = 200 
 
-#Limit the speed into areas when the threshold is exceeded
-limit_speed_mode = True
 #Vehicles are routed according to the less polluted route
 weight_routing_mode = False
+
+#Limit the speed into areas when the threshold is exceeded
+limited_speed = 30
+limit_speed_mode = True
+
 #Decrease all traffic lights duration into the area when the threshold is exceeded
 rf_trafficLights_duration = 0.2
 adjust_traffic_light_mode = True
diff --git a/sumo_project/emissions.py b/sumo_project/emissions.py
index 4cfdf76..b0753ca 100644
--- a/sumo_project/emissions.py
+++ b/sumo_project/emissions.py
@@ -60,7 +60,7 @@ def get_emissions(grid: List[Area], vehicles: List[Vehicle]):
             if vehicle.pos in area:
                 area.emissions += vehicle.emissions
         if config.limit_speed_mode and area.emissions > config.EMISSIONS_THRESHOLD and not area.locked:
-            actions.limit_speed_into_area(area, vehicles, 30)
+            actions.limit_speed_into_area(area, vehicles, config.limited_speed)
             traci.polygon.setColor(area.name, (255, 0, 0))
             traci.polygon.setFilled(area.name, True)
             if config.adjust_traffic_light_mode: